Does anyone have any actual experience in 3D printing guitars? I've done a fair bit of design for 3D printing in the last few years, mostly quadcopter frames and components and although they have to be impact resistant they are not really under tension. I note from other projects on the 'net that most people seem to be going with a wooden core / "tone block" and building around it, and indeed I have a few designs myself that use this paradigm - I'm wondering if that's strictly necessary? Clearly there are materials out there (CF impregnated filaments etc.) that will likely be strong enough for the centre section of a guitar but would PLA printed at 80%+ infill, reinforced with a pair of 5mm stainless steel bars from the bridge to neck pocket (no space for anything thicker!) be stiff enough for a 6 string to survive long term? So for example in the following image, the green section would be printed at 80% infill with the rest of the body in grey at 20-25%. The body is 44mm thick: Given I would be getting someone else to print this the costs prohibit a lot of experimentation (I'm looking at about £32 ($40) to get just that central green section printed...). I'm just talking about the body here - I have an old RG neck here ready and sitting around doing nothing. Any thoughts? Is this simply a non-starter?